Mixing-machine.



No. 787,441. PATENTED APR. 18, 1905.

' J. EMBLETON.

MIXING MACHINE. AIfPLIOATION FILED NOV. 7, 1904.

' 2 sums-sum 1.

WITNESSES: INVENTOR C. Stouyhton. U Tamas 51 3165 ATTORNEYS' No. 787,441. PATENTED APR. 18, 1905.

J. EMBLETON. MIXING MACHINE.

APPLICATION FILED NOV. 7, 1904.

Z SHEETS-SHEET 2.

. WITNESSES:

INVENTOR 0. 4% 011, 71 1: om fimrs E ma? ATTORNEYS Patented April 18, 1905.

JAMES EMBLETON, OF COLUMBUS, OHIO, ASSIGNOR TO J. F. ANGELL, OF

' COLUMBUS, OHIO.

SPECIFICATION forming part of Letters Patent No. 787,441, dated April 18, 1905. Application filed November 7, 1904. Serial No. 231,710. I

.To all whom, it 772/11 concern Be it knownlthat 1, JAMES EMPLETON, a citizen of the United States, residing at C0- lumbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Mixing-Machines, of which the following is a specification.

My invention relates to a new and useful improvement in mixers, and more particularly to that class known as concrete-mixers.

The object of the invention is to provide simple and effective means for feeding the materials to be mixed proportionately into a mixing-drum.

Another feature lies in a revolving mixingdrum having a delivery-spout and provided with fixed mixing-vanes and a self-cleaning mixing paddle-wheel.

Finally, the object of the invention is to provide a device of the character described that will be strong, durable, and efiicient and one in which the several parts will not be liable to get out of working order.

With the above and other objects in view the invention consists of the novel details of construction and operation, a preferable embodiment of which is described in the specification and illustrated in the accompanying drawings, in Which Figure l is a side elevation showing the mixing-drum broken away to illustrate the interior construction thereof. Fig. 2 is a plan view showing a portion of the mixingdrum and the hopper broken away to illustrate the conveyers and their supports. Fig. 3 is an endelevation of the delivery end of the mixer, and 4 is an end elevation of the feed end.

In the drawings, the numeral 1 designates the sills or beamsupon which the machine is mounted. Supported from the sills -b suitable chairs or brackets 2 is a vertica ly-extending hopper 3, having a central longitudi nal partition 4, which divides it into a cementcompartment 5 and a sand and gravel com-- partment 6. Arranged in the, bottom of each compartment is a spiral conveyer 7, which are rotatably supported upon. the bearing-bar 8 at one end and the front wall of the hopper at the other end. The shafts of the conveyers project beyond the front wall of the hopper and carry the intermeshing driving-gears 9 and 10. The gear 10 is mounted upon the shaft of the sand and gravel conveyor and is somewhat smaller than the gear 9, mounted on the cement-conveyer. It is obvious that by such an arrangement the sand and gravel conveyer will revolve at a higher rate of speed than the cement-conveyer. The sand and gravel conveyer also, carries a sprocket-wheel 11, which is connected, by means of a chain 12, to the sprocket 13, keyed upon the longitudinal drive-shaft 14, which will behereinafter described. The hopper communicates with a delivery and bearing collar 15, which projects concentrically in the annular inwardlyprojecting flange 16 of the mixing-drum 17.

The drum 17 is arran ed on its inner periphcry with a plurality of inclined angular vanes 18, which are adapted to thoroughly mix the materials received from the hopper when the drum 17 is rotated. Afiaring delivery-s out 19 is mounted upon the outer 0 en end 0 the drum 17 and is provided wit the paddlewheel 20. The paddle-wheel 20 is loosely disposed within the s out and comprises rearwardly-inclined pad les or blades 21 and the 0 en ring hubs 22, from which the said blades 21 are supported. The addle-wheel 20 has a diameter slightly less t an the inner diameter of the spout and is held in position by the inwardly-projecting lugs 23 and 24., The lugs 24 are disposed at the mouth of the spout and are formed with lateral projections or flanges 25, against which the blades 21 abut, thus preventing the Wheel from sliding g from t e said lugs and removed from the spout. The mixing-drum and spout are revolved at a comparatively low rate of speed, and thepaddle-wheel 20, being of smaller diameter than the spout, will drop by gravity Whenever the lugs 23 and 24 upon each side of the spout stand in vertical relation, which, as is obvious, will occur twice during each revolution of the mixing-druin. The paddle- Wheel hangs close to the lower inner periphery of the spout until that portion resting on the periphery is carried above a line passing horizontally across the center of the spout, when its own weight will cause it to drop or slide or begin to drop or slide downwardly until its opposite side rests upon the lower inner periphery. The falling of. the paddle- Wheel will jar it, and thus cause the concrete to drop from the blades and parts of the wheel. By this means the wheel is self-cleaning and will therefore produce better results.

A water-pipe 26 projects through the outer ring 22 o the paddle-Wheel within the said Wheel, terminating short of the inner ring 22 and is provided with perforations or suitable openings through which a suitable amount water is delivered upon the mixture.

The mixing-drum is formed at each end with flanged circular tracks 27, secured upon its outer periphery, which tracks rest upon friction driving-wheels 28, supported upon each side of the drum upon the shafts 14 and 14. For insuring a positive drive of the mixing-drum I form the forward track 27 i with a ring gear 29, which meshes with a driving-pinion 30, keyed upon the shaft 14 in juxtaposition to one of the forward friction- Wheels 28. It is obvious that the mixingdrum is supported upon the friction-wheels and is held against longitudinal displace: ment by the flanged tracks 27.

The shaft 14 is rotatably supported upon the standards 31, mounted upon the sills 1. For the purpose of driving the shaft 14 and imparting motion to the various parts of the mixer I mount upon the said shaft a wormgear 32, meshing with which is disposed the transverse Worm 3 3, securely supported upon a shaft journaled in the brackets 34 and carrying the band-wheels 35 and 36, the former loosely mounted and the latter keyed to the said shaft for the purpose of driving the same.

Over the gears 9 and 10 and the sprocketwheel 14 I mount upon the hop er 3 a downwardly-inclined shield 37, whic protects the same from falling gravel, cement, sand and the like.

In operation, power having been applied to the band-wheel 36 and the shaft 14 caused to revolve by the worms 32 and 33, motion is transmitted to the drum 17 through the wheels 28 and the pinion and to the conveyers 7'by the sprocket-wheel 13, chain 12, sprocket-wheel 11, and gears 9 and 10, the conveyers, as hereinbefore described, being revolved at different rates of speed. Cement is deliveredinto the compartment 5, and the material with which it is to be mixedsuch as sand, gravel, &c.is delivered into the compartment 6. The conveyer in the compartment 6 revolving at a higher rate of speed than the conveyer in the compartment 5 will thus deliver a greater amount of sand and gravel through the collar 15 than the amount of cement conveyed or delivered by the said conveyer in the compartment 5. The materials delivered through the collar 15 pass into the mixing-drum 17, which, as before stated, is revolved at a comparatively low rate of speed. The vanes 18 of the said drum catch up the materials and thoroughly mix them and owing to their forwardly-inclined arrangement gradually move the materials toward the spout 19 as they are mixed. Materials passing into the spout 19 are thoroughly mixed with water, delivered from the pipe 26 by means of the paddle-wheel 20, which is caused to revolve with the said spout. It is to be observed that the materials are maintained in a dry state until they are delivered into the spent 19, where they are mixed with water from the pipe 26. It is therefore obvious that some means for cleaning the paddle-wheel 20 must be provided or else the mixture would adhere thereto and interfere with the successful operation thereof. As before described, the paddle-wheel is self-cleaning, and owing to its falling or-jarring action the materials are removed by the vibration caused by the jar-,

ring of said paddle-wheel when it falls twice during each revolution.

Having now fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a mixing-machine, the combination with feed-troughs having feeding devices, and means for driving the feeding devices, of a mixin -drum having internally-arranged mixing devices, a delivery-spout carried by the drum, jarring mixing means arranged within the spout, and means for imparting motion to the parts.

2. In a mixing-machine, the combination with feeding means, of a revolving mixingdrum having forwardly-inclined mixing devices arranged upon its inner periphery, a flaring delivery-spout carried u on the drum and movable therewith, a mixing-wheel lit ting loosely in the spout, means projecting from the spout and engaging the mixingwheel to cause the same to turn with the spout, means for introducing water into the spout, and means for imparting motion. to the drum.

JAMES EMBLETON.

In presence of- A. L. PHELPs, M. B. SCHLEY. 

